A guardrail for initial construction of asphalt pavement and a method for using the same

Abstract

The application provides a guardrail for initial construction of asphalt pavement and a use method thereof. The guardrail comprises a plurality of interconnected guardrail units. Each guardrail unit comprises a plurality of parallel arranged bars. Two ends of each bar are connected with a base and a horizontal bar respectively. One end of each guardrail unit is provided with a first limiting mechanism. A connecting piece is arranged in the first limiting mechanism. The connecting piece is detachably connected with an adjacent guardrail unit. A plurality of second limiting mechanisms are arranged on the top of the base. Two sides of each second limiting mechanism are connected with the bars. Two supporting legs are hingedly connected on the second limiting mechanism. A sleeve is movably connected with one end of each supporting leg away from the second limiting mechanism. The sleeve is slidably connected with the bar. Two supporting legs can form a triangular support with the ground. The application can effectively prevent pedestrians from passing through the gap between the guardrails and enhance the stability of the guardrail on the ground.

Description

Technical Field

[0001] This invention relates to the field of road construction protection technology, and in particular to a protective barrier for the initial construction of asphalt pavement and its usage method. Background Technology

[0002] During road construction, the asphalt mixture needs a certain amount of time to harden. To ensure the smoothness of the road, the installation of guardrails is particularly important.

[0003] Because the road is long, long guardrails are needed. Large guardrails are expensive to manufacture and transport, while small guardrails, when placed side-by-side, cannot be tightly connected, making it easy for pedestrians to walk through the gaps and damage the road surface, thus failing to effectively protect it. Furthermore, most temporary guardrails are currently placed haphazardly, failing to form a stable connection with the ground, making them susceptible to being blown down by strong winds or accidentally knocked over by pedestrians, threatening the safety of vehicles and pedestrians and compromising road smoothness. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the above-mentioned background technology and provide a guardrail for the initial construction of asphalt pavement and its usage method.

[0005] The technical solution adopted in this invention is as follows: a guardrail for initial construction of asphalt pavement, comprising multiple interconnected guardrail units, each guardrail unit including multiple parallel stops, each stop having a base and a crossbar connected to its two ends respectively, each guardrail unit having a first limiting mechanism at one end, the first limiting mechanism having a connector, the connector being detachably connected to the adjacent guardrail unit; the top of the base having multiple second limiting mechanisms, the stops being connected to both sides of the second limiting mechanisms, two legs hinged to the second limiting mechanisms, the ends of the legs away from the second limiting mechanisms being movably connected to a sleeve, the sleeve being slidably connected to the stops, the two legs forming a triangular support with the ground.

[0006] Specifically, the connector includes a vertical pole and at least two pins, one end of which is connected to the vertical pole, and the other end of which passes through the first limiting mechanism and the stop bar at the end of the adjacent guardrail unit in sequence.

[0007] Specifically, the first limiting mechanism includes a limiting groove, two limiting plates, and a gear transmission assembly. The connecting piece is disposed in the limiting groove, the limiting groove is connected to the gear transmission assembly, and the gear transmission assembly can drive the limiting groove to move between the two limiting plates. The limiting plates are engaged with the upright through a top-mounted insert.

[0008] Specifically, the limiting groove has a U-shaped cross-section, one side wall of the limiting groove is provided with a slot that matches the pin, and the other side wall is connected to the gear transmission assembly.

[0009] Specifically, the top of the upright is provided with a first slot that matches the shape of the insert, and the insert is connected to the top of the limiting plate through a first elastic element.

[0010] Specifically, the gear transmission assembly includes a rack and a gear that mesh with each other. One end of the rack is connected to the limiting groove, and the gear is provided with a rotating shaft. The end of the rotating shaft away from the gear is provided with a handle.

[0011] Specifically, the second limiting mechanism includes a hinge shaft, a limiting rod, and two locking blocks. The hinge shaft passes through the support leg and is connected to the locking blocks at both ends. The support leg is provided with a second slot. The limiting rod is installed in the second slot, and the end of the limiting rod away from the second slot is slidably connected to the locking block.

[0012] Specifically, the card block is provided with a slide rail, the limiting rod is disposed in the slide rail, and the end of the limiting rod away from the second slot is connected to the card block through a second elastic member.

[0013] Specifically, the end of the support leg away from the second limiting mechanism is provided with an abutment plate.

[0014] This invention also provides a method for using guardrails in the initial construction of asphalt pavements, comprising the following steps:

[0015] s1. Drive the gear transmission assembly to move the limiting groove away from the limiting plate, then install the connector in the limiting groove, and then drive the gear transmission assembly in the opposite direction to move the limiting groove between the two limiting plates, so as to engage the insert block with the upright.

[0016] s2. Connect the end of the pin away from the upright to the stop bar at the end of the adjacent guardrail unit;

[0017] s3. Move the sleeve away from the end of the support leg, and then rotate the support leg toward the ground to insert the limiting rod into the second slot.

[0018] The beneficial effects of this invention are:

[0019] (1) The connector and the first limiting mechanism enable simple connection and separation between the two guardrail units. Construction workers connect an appropriate number of guardrail units according to the length of the construction road so that the connected guardrail can completely surround the construction road, which can effectively prevent pedestrians from walking through the gaps between the guardrails and stepping on the road surface under construction.

[0020] (2) The limiting mechanism fixes the support legs so that the two support legs form a triangular support with the ground, which enhances the stability of the guardrail on the ground and can effectively prevent it from being blown down by strong winds or accidentally knocked down by pedestrians. Attached Figure Description

[0021] Figure 1 This is a structural diagram of an embodiment of the present invention;

[0022] Figure 2 This is a structural diagram of the first limiting mechanism and the connecting member in this invention;

[0023] Figure 3 This is a connection structure diagram of the second limiting mechanism, the support leg, and the sleeve in this invention;

[0024] Figure 4 This is a diagram showing the connection structure between the second limiting mechanism and the support leg in this invention.

[0025] In the picture:

[0026] 100. Guardrail unit; 110. Stop bar; 111. Through hole; 112. T-shaped slide rail; 120. Horizontal bar; 130. Base;

[0027] 200, First limiting mechanism; 210, Limiting groove; 211, Slot; 220, Limiting plate; 230, Insert block; 240, First elastic element; 250, Gear transmission assembly; 251, Rack; 252, Gear; 253, Rotating shaft; 254, Handle;

[0028] 300. Connector; 310. Upright pole; 311. First slot; 320. Pin;

[0029] 400, Second limiting mechanism; 410, Hinge shaft; 420, Locking block; 421, Slide rail; 422, Strip-shaped through hole; 430, Limiting rod; 440, Second elastic element; 450, Pulley block; 460, Connecting plate;

[0030] 500, support leg; 510, second slot;

[0031] 600, Abutment plate;

[0032] 700, sleeve; 710, slider; 720, pull rod. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the embodiments.

[0034] Reference Appendix Figure 1-2A guardrail for initial construction of asphalt pavement includes multiple interconnected guardrail units 100. Each guardrail unit 100 includes multiple parallel guide bars 110, with bases 130 and crossbars 120 connected to both ends of each guide bar 110. One end of each guardrail unit 100 is equipped with a first limiting mechanism 200, which includes a connector 300 detachably connected to adjacent guardrail units 100. Construction workers can assemble an appropriate number of guardrail units 100 according to the length of the construction road, ensuring the assembled guardrail completely surrounds the road and prevents pedestrians from walking through gaps in the guardrails and trampling on the road surface under construction.

[0035] Reference Appendix Figure 2 The first limiting mechanism 200 includes a limiting groove 210, two limiting plates 220, and a gear 252 transmission assembly 250. A connecting member 300 is disposed in the limiting groove 210. The connecting member 300 includes a vertical rod 310 and at least two pins 320, with one end of the pins 320 connected to the vertical rod 310. The limiting groove 210 has a U-shaped cross-section, and a slot 211 is provided on one side wall. The end of the pin 320 away from the vertical rod 310 passes through the slot 211 and the stop bar 110 at the end of the adjacent guardrail unit 100 in sequence to connect the two guardrail units 100. In specific implementation, a through hole 111 adapted to the pin 320 is provided on the stop bar 110. The other side wall of the limiting groove 210 is connected to the gear 252 transmission assembly 250. The gear 252 transmission assembly 250 can drive the limiting groove 210 to move between the two limiting plates 220. The limiting plates 220 are engaged with the upright 310 through the top-mounted insert 230. During installation, the drive gear 252 transmission assembly 250 moves the limiting groove 210 away from the limiting plate 220. Then, the connector 300 is installed in the limiting groove 210. Then, the drive gear 252 transmission assembly 250 is reversed to move the limiting groove 210 between the two limiting plates 220. The connector 300 is then secured with the insert block 230, thus installing the connector 300 in one guardrail unit 100. Then, the end of the pin 320 that passes through the limiting groove 210 is inserted into the through hole 111 on the end stop bar 110 of the adjacent guardrail unit 100, thus connecting the two guardrail units 100. To make the connection between the two guardrail units 100 more stable, a thread can be provided on the pin 320. After the pin 320 passes through the through hole 111 on the stop bar 110, it is fixed with a nut.

[0036] In some feasible embodiments, the top of the upright 310 is provided with a first slot 311 that matches the shape of the insert 230. The top of the insert 230 is connected to the limiting plate 220 through a first elastic member 240. Moving the insert 230 away from the limiting plate 220 allows the insert 230 to disengage from the first slot 311. At this time, the upright 310 can move along with the movement of the limiting groove 210. The gear 252 transmission assembly 250 that drives the movement of the limiting groove 210 includes a rack 251 and a gear 252 that mesh with each other. One end of the rack 251 is connected to the limiting groove 210. The gear 252 is provided with a rotating shaft 253. The end of the rotating shaft 253 away from the gear 252 is provided with a handle 254. Applying force to the handle 254 can drive the gear 252 transmission assembly 250. Due to the complex on-site construction environment, in order to protect the structure of the gear 252 transmission assembly 250 and ensure its normal operation, a cavity can be set in the base 130, and the rack 251, gear 252 and shaft 253 can be installed in the cavity of the base 130. The handle 254 can be installed on the end of the shaft 253 that extends out of the side wall of the base 130.

[0037] Reference Appendix Figure 1 and 3 The base 130 is provided with a number of second limiting mechanisms 400 on its top. The two sides of the second limiting mechanism 400 are connected to the stop bar 110. Two support legs 500 are hinged on the second limiting mechanism 400. A sleeve 700 is movably connected to the end of the support leg 500 away from the second limiting mechanism 400. The sleeve 700 is slidably connected to the stop bar 110. In practice, a T-shaped slide rail 112 can be provided on the side of the stop bar 110, and a slider 710 adapted to the T-shaped slide rail can be provided on the side of the sleeve 700. The length of the T-shaped slide rail is set according to the length of the support leg 500. In order to facilitate the movement of the sleeve 700, a pull rod 720 can also be provided on the top of the sleeve 700. When the guardrail needs to be erected on the road surface, sliding the sleeve 700 away from the second limiting mechanism 400 allows the support leg 500 to disengage from the sleeve 700. The support leg 500 can then rotate towards the ground and be fixed by the second limiting mechanism 400. At this time, the two support legs 500 can form a triangular support with the ground, making the guardrail unit 100 more stably supported on the ground and less likely to be blown over by the wind or accidentally knocked down by pedestrians. When the guardrail needs to be removed and stored for later use, the second limiting mechanism 400 is released from its limit on the support leg 500, the support leg 500 is rotated away from the ground, and then the sleeve 700 is moved towards the support leg 500 and fitted onto the end of the support leg 500.

[0038] Reference Appendix Figure 4The second limiting mechanism 400 includes a hinge shaft 410, a limiting rod 430, and two locking blocks 420. The hinge shaft 410 passes through the support leg 500 and is connected to the locking blocks 420 at both ends. The support leg 500 is provided with a second slot 510. The limiting rod 430 is installed in the second slot 510, and the end of the limiting rod 430 away from the second slot 510 is slidably connected to the locking block 420. When the limiting rod 430 is moved away from the end of the support leg 500 to disengage from the second slot 510, the support leg 500 can rotate; when the limiting rod 430 is moved closer to the end of the support leg 500 to insert into the second slot 510, the support leg 500 is fixed and forms a triangular support with the ground. During implementation, to prevent the second limiting mechanism 400 from shifting up and down, the two ends of the hinge shaft 410 can be inserted through the locking block 420 and then inserted into the stop bars 110 on both sides. Alternatively, a connecting plate 460 can be set at the bottom of the locking block 420, and the connecting plate 460 and the base 130 can be fixed with bolts.

[0039] In some feasible embodiments, the locking block 420 is provided with a slide 421, and the limiting rod 430 is disposed in the slide 421. The end of the limiting rod 430 away from the second slot 510 is connected to the locking block 420 through the second elastic member 440. In order to facilitate the movement of the limiting rod 430, a lever 450 can also be provided on the side of the limiting rod 430. A strip-shaped through hole 422 is drilled on the side wall of the slide 421 along the length direction of the slide 421, and the end of the lever 450 away from the limiting rod 430 extends out of the strip-shaped through hole 422.

[0040] To enhance the stability of the support leg 500 supporting the guardrail unit 100, this embodiment provides an abutment plate 600 at the end of the support leg 500 away from the second limiting mechanism 400. The abutment plate 600 has a larger contact area with the ground, thus making it more stable.

[0041] The above are preferred embodiments of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles described in the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A guardrail for initial construction of asphalt pavement, comprising multiple interconnected guardrail units, characterized in that: The guardrail unit includes multiple parallel stops, with a base and a crossbar connected to both ends of each stop. One end of the guardrail unit is provided with a first limiting mechanism, which includes a connector that is detachably connected to the adjacent guardrail unit. The base is provided with a plurality of second limiting mechanisms on the top. The two sides of the second limiting mechanism are connected to the stop bar. Two support legs are hinged to the second limiting mechanism. A sleeve is movably connected to the end of the support leg away from the second limiting mechanism. The sleeve is slidably connected to the stop bar. The two support legs can form a triangular support with the ground. The side of the stop lever is provided with a T-shaped slide rail, and the side of the sleeve is provided with a slider that is adapted to the T-shaped slide rail; The second limiting mechanism includes a hinge shaft, a limiting rod, and two locking blocks. The hinge shaft passes through the support leg and is connected to the locking blocks at both ends. The support leg is provided with a second slot. The limiting rod is installed in the second slot. The end of the limiting rod away from the second slot is slidably connected to the locking block. When the limiting rod is separated from the second slot, the support leg can rotate around the hinge shaft to allow the support leg to insert into or disengage from the sleeve.

2. The protective barrier for initial construction of asphalt pavement according to claim 1, characterized in that, The connector includes a vertical pole and at least two pins. One end of each pin is connected to the vertical pole, and the other end passes through the first limiting mechanism and the stop bar at the end of the adjacent guardrail unit.

3. The protective barrier for initial construction of asphalt pavement according to claim 2, characterized in that, The first limiting mechanism includes a limiting groove, two limiting plates, and a gear transmission assembly. The connecting piece is disposed in the limiting groove, the limiting groove is connected to the gear transmission assembly, and the gear transmission assembly can drive the limiting groove to move between the two limiting plates. The limiting plates are engaged with the upright through a top-mounted insert.

4. A protective barrier for initial construction of asphalt pavement according to claim 3, characterized in that, The limiting groove has a U-shaped cross-section, and one side wall of the limiting groove is provided with a slot that matches the pin, while the other side wall is connected to the gear transmission assembly.

5. A protective barrier for initial construction of asphalt pavement according to claim 3, characterized in that, The top of the upright is provided with a first slot that matches the shape of the insert, and the insert is connected to the top of the limiting plate by a first elastic member.

6. A protective barrier for initial construction of asphalt pavement according to claim 3, characterized in that, The gear transmission assembly includes a rack and a gear that mesh with each other. One end of the rack is connected to the limiting groove. The gear is provided with a rotating shaft, and the end of the rotating shaft away from the gear is provided with a handle.

7. A protective barrier for initial construction of asphalt pavement according to claim 6, characterized in that, The card block is provided with a slide rail, and the limiting rod is disposed in the slide rail. The end of the limiting rod away from the second slot is connected to the card block through a second elastic element.

8. A protective barrier for initial construction of asphalt pavement according to claim 7, characterized in that, The end of the support leg away from the second limiting mechanism is provided with an abutment plate.

9. A method of using a guardrail for initial construction of asphalt pavement as described in claim 8, characterized in that, Including the following steps: s1. Drive the gear transmission assembly to move the limiting groove away from the limiting plate, then install the connector in the limiting groove, and then drive the gear transmission assembly in the opposite direction to move the limiting groove between the two limiting plates, so as to engage the insert block with the upright. s2. Connect the end of the pin away from the upright to the stop bar at the end of the adjacent guardrail unit; s3. Move the sleeve away from the end of the support leg, and then rotate the support leg toward the ground to insert the limiting rod into the second slot.

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